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Math help thnx

 May 20, 2019
 #1
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\((p+7q)^2\\=(p+7q)(p+7q)\\=p(p+7q)\quad + \quad 7q(p+7q)\)

 

And you can take if from there. 

 

 

 

No other answerer finish this,  thanks.

 May 20, 2019

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